Transcript for Obama Administration Replacements: Critical Time on World Stage

chairman. Let's get more from's security correspondent, martha raddatz. Martha, this comes at a critical time. Not only is secretary of state clinton leaving. Also, the secretary of defense, leon panetta. And david petraeus at the cia. All these vacancies are happening when there's a lot of hot spots in the world bubbling up. There are, george. This is a critical time. The election may be over. But look ahead. You have iran, who is trying to acquire a nuclear weapon. You have north korea, there's satellite photos just out showing that north korea would like to test another long-range ballistic missile. And you have afghanistan. This is such a critical time in afghanistan. They're putting together drawdown plans. And what the u.S. Does after 2014. The big decision there is how many troops to leave in right now. And then, how quickly to ramp down, going to 2014. How quickly. And general john allen who is under investigation because of the e-mails involved in the petraeus affair.

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